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# Copyright (c) 2020 ITE Corporation. All Rights Reserved.
# SPDX-License-Identifier: Apache-2.0
config I2C_ITE_IT8XXX2
bool "ITE IT8XXX2 I2C driver"
default y
depends on DT_HAS_ITE_IT8XXX2_I2C_ENABLED
help
Enable I2C support on it8xxx2_evb.
Supported Speeds: 100kHz, 400kHz and 1MHz.
This driver supports repeated start.
if I2C_ITE_IT8XXX2
config I2C_IT8XXX2_FIFO_MODE
bool "IT8XXX2 I2C FIFO mode"
default y
help
This is an option to enable FIFO mode which can reduce
the time between each byte to improve the I2C bus clock
stretching during I2C transaction.
The I2C controller supports two 32-bytes FIFOs, FIFO2
only supports one channel of B or C.
I2C FIFO mode of it8xxx2 can support I2C APIs including:
i2c_write(), i2c_read(), i2c_burst_read.
endif # I2C_ITE_IT8XXX2
config I2C_ITE_ENHANCE
bool "ITE IT8XXX2 I2C enhance driver"
default y
depends on DT_HAS_ITE_ENHANCE_I2C_ENABLED
help
This option can enable the enhance I2C
of IT8XXX2 and support three channels.
if I2C_ITE_ENHANCE
config I2C_IT8XXX2_CQ_MODE
bool "IT8XXX2 I2C command queue mode"
default y
select SOC_IT8XXX2_CPU_IDLE_GATING
help
This is an option to enable command queue mode which can
reduce the time between each byte to improve the I2C bus
clock stretching during I2C transaction.
I2C command queue mode of it8xxx2 can support I2C APIs
including: i2c_write(), i2c_read(), i2c_burst_read.
config I2C_CQ_MODE_MAX_PAYLOAD_SIZE
int "It is allowed to configure the size up to 2K bytes."
range 32 2048
default 64
help
This is the command queue mode payload size which size
up to 2k bytes.
endif # I2C_ITE_ENHANCE